Workaround does not crash but “some information will be missing”:
ORA-07445 [MSQSUB()+32] When Select From V$SQL_PLAN [ID 791225.1]
Bug 7022234 is Fixed in 11.2
Patches exist for it on most platforms on top of 10.2.0.4 at the moment of writing this note
1- apply the patch 7022234 if available
2- If the patch is not available you may use the following workaround
alter session set “_cursor_plan_unparse_enabled”=false;
